x=[4545,7655,4563,653]
i=0
while i<len(x):
    print("======这是第",i+1,"次循环============")
    print("刚刚进入循环时i的值是：",i)
    print("x[",i,"]=",x[i])
    i+=1
    print("i的值加1后：",i)
















'''
x=[4,2,1,8]
n=0
while n<len(x) :
    print("第",n+1,"次循环==========")
    print("n加1之前：",n)
    print(n,":x[",n,"]=",x[n])
    n+=1
    print("n加1之后:",n)
'''